Which is the missing value in the proportion 4/5=x/30

x=24

Step-by-step explanation:

By cross multiplying and we get

5x=30*4

5x=120

x=120/5

x=24 (which makes sense because in order to get a denominator of 30 from 5 you need to multiply it by 6, and then the numerator would also be multiplied by 6 (4*6=24) )

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rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500